System for the treatment and purification of biogas
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United States of America Patent
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Apr 14, 2015
Grant Date -
Apr 18, 2013
app pub date -
Jul 24, 2012
filing date -
Oct 18, 2011
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Abstract
A system and method for the purification of biogas, the system comprising: a gas compressor for increasing the pressure of the biogas for processing; a gas processor for removing any CO2, volatile organic compounds, and H2S, from the gas; an optional biological sulfur removal system for treating offgas from the gas processor; a regenerative thermal oxidizer system for treating gas from the biological sulfur removal system for thermal destruction of volatile organic compounds, H2S, and CH4 slipped from the gas processor; a catalytic oxygen removal system for receiving product gas from the gas processor and removing oxygen from the product gas; and a caustic scrubber for receiving product gas from the catalytic oxygen removal system and neutralizing any acid formed during catalytic oxygen removal.
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